MOSCOW — A passenger airliner is on fire after running off the runway while landing at Moscow’s Vnukovo airport. There was no immediate confirmed word on whether there were any casualties in the Saturday crash of the Tu-204 belonging to Red Wing Airlines. Russia’s state news channel Vesti said the plane was not carrying passengers, and it had only a crew of 12 aboard. The cause of the accident was not immediately known. Light snow was falling in Moscow at the time. The Tu-204 is a twin-engine medium-range jest with a capacity of 210 passengers.